Combination for and the process of manufacturing artificial stone.



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EMILE THEODORE BUN DSMAN N, OF POINT LOMA, CALIFORNIA, ASSIGNOR TO KATHERINE TINGLEY, OF POINT LOMA, CALIFORNIA.

Specification of Letters Patent.

Patented Dec. 25, 1906.

Application filed NOVBlHbQI 21, 1905- BBTlB-l. NO. 2881371.

To all whom it may concern.-

Be it known that I, EMILE THEODORE BUNDSMANN, a citizen of the United States, residing at Point Loma, in the city and county of San Diego and State of California, have invented new and useful Improvements in Combinations for and the Process of Manufacturing Artificial Stone, of which the following is a specification.

purpose of making new and improved artificial stones: a composition containing a wacke, sea-sand, granulite in combina l' 5 of cement.

WIIffi a saturated solut'idii'bf sili c o n dioxid in potassium silicate with hydrosflicouoric acid m 'enmaanon with well-known brands These constituents combined to ma cial stones of great density, hardness, and power of resistance. Stones thus artificially made and impregnated with such substances as earth-wax, ozocerite, or ceresin are waterproof and can be used for all building pur oses or in site for pavements, &c. Throug the reduction of the mass to the consistency of a powder innumerable superfices are presented for the action of chemicals, thus causing the perfect etrifaction of the mass and insuring great ensity. Through the setting process of the finely-powdered mass the unaffected saturated solution of silicon dioxid in potassium silicate is squeezed through the surface, when coming in contact with hydrosilico-fluoric acid and atmoshere silicon dioxid is deposited upon the surface of the stone, roducing a solid smooth glazed surface. T e ozocerite or ceresin is applied to the molds, thus preventing adheslon and subsequent ossible cracking of the stone through the stcontraction of the mass. At the sametime enough of the wax is absorbed by the stone to give a v ije moof surface.

e process is as follows: Seven parts, by

weight,of avwacke and tenparts, by weight, of sea-san o e welve to fifteen parts, by weig o cement are mixed and powdered to dust. A samp e of this powder mixture I rubbed between the finger-tips should not feel gritty. Add to this mixture ten parts, by weight, of a saturated solution of silicon dioxid dissolve m po assium s1 ca y I tigrade becoming extremely porous. A composition of matter combined for the parts commercial solution of otassium silicate (or its dry equivalent,) and two parts SlllGOIl dioXid ten parts, by weight, of water.

Reduce e mass to the consistency of paste and mix thoroughly for seven minutes. Pour this mass into a form and let it settle for twelve hours. After this the stone is airdried or dried at a temperature of 100 cenporous stone is immersed in ten parts, by weight, of h drosilico-fluoric acid (5 eoifio gravity 1.0 7% per cent. ute wit fifty parts, by yveight, of water. The stone should remain in this sblutlon for another twelve hours. The stone can be air dried.

Another application of the process, especially adapted to in site. work on account of the rapid setting dithe'stone, is as follows:

The minerals, as well as the saturate qlution of silicon dioxid, are prepare in the sam'emanner as in the foregoing' process. After the mass is reduced to a paste ten parts,

b wei ht, ofh drosilico-fluoric acidaniften parts, weig tftrwateeermaea to the paste. The mass is stirred quickly and poured into form or used in situ. The comound sets instantaneously and can be taken om the form in one or two minutes.

What I claim, and desire to secure by Let- 8o ters Patent of the United States, is

1. The herein-described composition of matter, consisting of graywacke, sea-sand, granulite and cement, in combination with a saturated solution of silicon dioxid in potassium silicate with hydrosilico-fluoric acid.

2. The herein-described composition of matter for producing artificial stone, consisting of the following parts by weight: gray;

wacke, seven parts; sea-sand, ten parts; 'de- '90 menu-stave to fifteeiip'aits saturated solution" of silicon dioxid in potasgi ll llwsilicate, ten parts'f'water, teff'paitsg the whole saturated with a solution of hydrosilicofluoric acid (specific gravity 1.06) ten parts; water, 5

fifty pi arts.

3. he process of manufacturing artificial This 60 perfect r co tion of in potassium silicate; In testimony whereof .1 have signed my and then leaving it in molds of the desired name to this specification in the presence of form for a eriod of not less than twelve two subscribing witnesses.

; hours; and t en saturating the stone with a EMILE THEODORE BUNDSMANN.

. 5 diluted solution of hydrosilico-fluoric acid, Witnesses:

for another period of not less than twelve G. THURSTON,

hours, substantially as herein described. 1 BERTHA W. BUNDSMAN. 

